LM2651MTC-ADJ/NOPB ,1.5A High Efficiency Switching Regulator 16-TSSOP -40 to 125 SNVS032E–FEBRUARY 2000–REVISED JANUARY 20165 Pin Configuration and FunctionsPW Package16-Pin TSSOP ..
LM2651MTCX-1.8 ,1.5A High Efficiency Switching RegulatorApplicationsThe LM2651 has a 300 kHz fixed frequency internal oscilla- n Personal digital assistant ..
LM2651MTCX-1.8 ,1.5A High Efficiency Switching RegulatorApplicationsThe LM2651 has a 300 kHz fixed frequency internal oscilla- n Personal digital assistant ..
LM2651MTCX-3.3 ,1.5A High Efficiency Switching Regulatorfeatures include input undervoltage lockout,current limiting, and thermal shutdown.Typical Applicat ..
LM2651MTCX-ADJ ,1.5A High Efficiency Switching Regulatorapplications, the efficiency still exceeds 80% at 15mAn Input undervoltage lockoutload. A shutdown ..
LM2653MTC-ADJ ,1.5A High Efficiency Synchronous Switching RegulatorGeneral Descriptionn 0.1Ω Switch On ResistanceThe LM2653 switching regulator provides high efficien ..
LM49370RL/NOPB ,Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85features an SNR of 85 dB with an 18-bit 48 kHz input. In SE mode the headphone amplifier delivers a ..
LM49370RLX/NOPB ,Boomer Aud Pwr Amp & Sub-Sys w/ an Ultra Low EMI Sprd Spectrum Class D Loudspkr Amp 49-DSBGA -40 to 85FEATURES • 16 Step Volume Control for Microphone in 2dB Steps2• Spread Spectrum Class D Architectur ..
LM4938MH ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainBlock Diagram®Boomer is a registered trademark of NationalSemiconductor Corporation. 2005 National ..
LM4938MHX ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable GainGeneral Description Key Specificationsn P at 1% THD+NThe LM4938 is a monolithic integrated circuit ..
LM4938MHX NOPB ,Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain 28-HTSSOP features an externally controlled, low-APPLICATIONSpower consumption shutdown mode, and both apower ..
LM4946SQ , Output Capacitor-Less Audio Subsystem with Programmable National 3D
LM2651MTC-3.3/NOPB-LM2651MTC-ADJ/NOPB
1.5A High Efficiency Synchronous Switching Regulator
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM2651SNVS032E –FEBRUARY 2000–REVISED JANUARY 2016
LM2651 1.5A High-Efficiency Synchronous Switching Regulator Features 3 DescriptionThe LM2651 switching regulator provides high- Ultrahigh Efficiencyupto 97% efficiency power conversion overa 100:1 load range• High-Efficiency Overa 1.5-Ato 1.5-mA Load (1.5Ato15 mA). This feature makes the LM2651 anRange idealfitin battery-powered applications that demand 4-Vto 14-V Input Voltage Range long battery lifein both run and standby modes. 1.8-V, 2.5-V, 3.3-V,or ADJ Output Voltage Synchronous rectificationis usedto achieve upto Internal MOSFET Switch With Low RDS(on)of 97% efficiency.At light loads, the LM2651 entersa
low power hystereticor sleep modeto maintain high75 mΩ
efficiency.In many applications, the efficiency still• 300-kHz Fixed Frequency Internal Oscillator exceeds 80% at 15-mA load.A shutdown pinis• 7-µA Shutdown Current available to disable the LM2651 and reduce the Patented Current Sensing for Current Mode supply currentto less than10 µA.
Control The LM2651 containsa patented current sensing• Input Undervoltage Lockout circuitry for current mode control. This feature
eliminates the external current sensing resistor• Adjustable Soft-Start
requiredby other current-mode DC-DC converters.• Current Limit and Thermal Shutdown
The LM2651 hasa 300-kHz fixed frequency internal• 16-Pin TSSOP Package
oscillator. The high oscillator frequency allows the
useof extremely small, low-profile components.
2 Applications programmable soft-start feature limits current• Personal Digital Assistants (PDAs) surges from the input power supplyat start-up and• Computer Peripherals providesa simple means of sequencing multiple• Battery-Powered Devices power supplies. Handheld Scanners Other protection features include input undervoltage• High-Efficiency 5-V Conversion lockout, current limiting, and thermal shutdown.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Typical Application
